Motor Will Not Start
#1
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From: WicklowIreland, IRELAND
Hey guys, I am very new to all this. Just assembled my first ever plane. It was an ARTF Cessna. It has a new MVVS .45 2 stroke motor.
I CANT GET IT TO START.
Could you please offer some advice, I have followed the instructions and am now frustrated.
Many thanks
Macca
I CANT GET IT TO START.
Could you please offer some advice, I have followed the instructions and am now frustrated.
Many thanks
Macca
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From: Auburn,
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Check your glow plug and make sure it's got a good glow to it. Follow the manufactures specs. for the settings for the needle positions. Also prime the engine by flipping the engine over several times while you have your finger over the intake and with the throttle at half open. Then bring the throttle to the low position and try to start it up.
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From: WicklowIreland, IRELAND
Hey guys thanks, I dont know the type of glow plug, it is the standard one in the MVVS .45, i did not take it out. Same for the Fuel, it was purchased in the Model Shop pre mixed. Expert mix GX5 is written on the container
I did as you suggested last night followed instructions I got online (SEE BELOW) for choking, flipped the motor, nothing! As I look at the front of the plane the adjuster on the left is screwed out 1.2mm, the one on the right is out 3 turns, although I have tried many variations on this one. The guy in the shop has told me to bring it in and he will get it started, it is 60kms away though and I cant help thinking that I am being stupid and missing something
__________________________________
To Hand Start (almost) any Engine
1. Move the throttle to idle, hook up the glow igniter and turn over the engine slowly by hand. If it kicks then skip to step 7. If you do not feel a slight kick then disconnect the igniter and continue with the next step.
2. Open the throttle all the way. Put a finger or thumb over the carburetor to seal it. Turn over the prop by hand — you will see fuel moving up the fuel line toward the carb. This is called choking.Continue doing this until you see the fuel enter the carburetor. After you see the fuel enter the carburetor give it only one more flip. If you flip it more than once you will probably flood the engine.
3. Remove your finger from the carb and move the throttle to the idle setting.
4. Flip the propeller over sharply a half dozen times to get the fuel distributed throughout the engine.
5. Connect the glow igniter.
6. While holding the propeller, turn (do not flip) the engine over several times until you feel a definite "kick." The kick means that it is ready to start. If the engine is flooded then be careful when you flip the prop — it may backfire and smack your hand pretty hard giving you a nice cut.
7. Give the propeller a good flip and it should start immediately. If it does not start continue to flip the prop until it no longer kicks. If it still does not start then disconnect the glow igniter and go back to step 1. Once or twice through these steps only does not even take a minute and your engine should start.
I did as you suggested last night followed instructions I got online (SEE BELOW) for choking, flipped the motor, nothing! As I look at the front of the plane the adjuster on the left is screwed out 1.2mm, the one on the right is out 3 turns, although I have tried many variations on this one. The guy in the shop has told me to bring it in and he will get it started, it is 60kms away though and I cant help thinking that I am being stupid and missing something
__________________________________
To Hand Start (almost) any Engine
1. Move the throttle to idle, hook up the glow igniter and turn over the engine slowly by hand. If it kicks then skip to step 7. If you do not feel a slight kick then disconnect the igniter and continue with the next step.
2. Open the throttle all the way. Put a finger or thumb over the carburetor to seal it. Turn over the prop by hand — you will see fuel moving up the fuel line toward the carb. This is called choking.Continue doing this until you see the fuel enter the carburetor. After you see the fuel enter the carburetor give it only one more flip. If you flip it more than once you will probably flood the engine.
3. Remove your finger from the carb and move the throttle to the idle setting.
4. Flip the propeller over sharply a half dozen times to get the fuel distributed throughout the engine.
5. Connect the glow igniter.
6. While holding the propeller, turn (do not flip) the engine over several times until you feel a definite "kick." The kick means that it is ready to start. If the engine is flooded then be careful when you flip the prop — it may backfire and smack your hand pretty hard giving you a nice cut.
7. Give the propeller a good flip and it should start immediately. If it does not start continue to flip the prop until it no longer kicks. If it still does not start then disconnect the glow igniter and go back to step 1. Once or twice through these steps only does not even take a minute and your engine should start.
#5
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Are you using an electric starter? If you are trying by hand you may be turning the prop in the wrong direction. As your looking at the plane it should turn counterclockwise. Also look to see if it is taking in fuel. Do you have the vent tube hooked up to the muffler? It should be. Are you sure you didn't mix up the fuel lines? I've done this. Switch them and see if thats the problem. If your using the vent to the carb it can't get fuel. Make sure your glow igniter is charged. I hope this helps and you get it started!
Gibbs
Gibbs
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From: WicklowIreland, IRELAND
I am trying by hand, I am turinging Counterclock wise. It is taking in fuel, the weighted line is defo connected to the carb and I can see fuel going in.
I am in the process of charging the glow starter again, just incase! Thanks for the help
1 last question, how do I know the Glow starter is actually charged? Will it heat?
Macca
I am in the process of charging the glow starter again, just incase! Thanks for the help
1 last question, how do I know the Glow starter is actually charged? Will it heat?
Macca
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From: Locust Grove,
GA
There is three things you need to get an engine to run.
FUEL, AIR, HEAT.
Prime the engine, remove the plug and make sure that it is wet.
If not, no fuel, figure out why.
If plug is wet, connect igniter to make sure that coil in glow plug glows.
If not, no heat.
With plug removed, and engine inverted, prime until fuel comes out of the plug hole.
Install plug, attach igniter and start!
FUEL, AIR, HEAT.
Prime the engine, remove the plug and make sure that it is wet.
If not, no fuel, figure out why.
If plug is wet, connect igniter to make sure that coil in glow plug glows.
If not, no heat.
With plug removed, and engine inverted, prime until fuel comes out of the plug hole.
Install plug, attach igniter and start!
#9

When I start an engine I will usually do it at "high idle". There should be about 1/8" opening in the throttle barrel. This will allow a little fuel and a liitle air into the engine. If it has been primed properly, it should start.
Definitely check the plug for a glowing element. If not glowing it can be either the plug or the ignitor.
Definitely check the plug for a glowing element. If not glowing it can be either the plug or the ignitor.
#10
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From: WicklowIreland, IRELAND
Ok guys I took on board what you said and I have ran through the whole process over and over! I have also taken out the glow plug.
Lines are correct - fuel is entering the motor
glow plug is heating instantly
engine is kicking (sometimes) but it is also flooding
Cant get any joy with trying to start.
I have been told that new engines are difficult to start but this is crazy....
Macca
Lines are correct - fuel is entering the motor
glow plug is heating instantly
engine is kicking (sometimes) but it is also flooding
Cant get any joy with trying to start.
I have been told that new engines are difficult to start but this is crazy....
Macca
#11

This is tough from thousands of miles away. If you are SURE it is flooding you need to reduce the fuel flow until it is running. At the very least until you get a short burst of running. Once you KNOW it is primed/flooded go ahead and either clamp off or disconnect the fuel line temporarily. Then flip the prop and see if you can get a short burst out of it. We're just trying to get it to run at all at this point, let's verify it will do that much.
#12

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From: Long Beach,
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ORIGINAL: maccapolo
I am trying by hand...
I am trying by hand...
I remember when i was a NOOB, i couldn't hand-start an engine to save my life, needle settings were wrong, too much fuel, not enough fuel etc...an electric starter will be able to start the engine with the settings being way out of whack, making your life a whole lot easier.
#13
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From: WicklowIreland, IRELAND
Tried that.
Nothing, thanks for you help but I think I am wasting all of our time here. I am going to bring it back to the shop.
I let ya know!
Nothing, thanks for you help but I think I am wasting all of our time here. I am going to bring it back to the shop.
I let ya know!
ORIGINAL: bruce88123
This is tough from thousands of miles away. If you are SURE...........
This is tough from thousands of miles away. If you are SURE...........
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From: Faribault, MN
stick a finger of the hand you are using to hold the plane over the hole in the end of the muffler as you crank over the prop. this will ensure that the motor is sucking fuel into the engine. I had lots of trouble starting cold engines until i was taught this trick.. do please look first to make sure that you are doing this in a completely safe manner.
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From: WicklowIreland, IRELAND
Tried that way back in this post, thanks, its getting close to midnight here so I am gonna call it a day and accept my defeat!!
Later guys
Later guys
ORIGINAL: InIt4MyBoys
stick a finger of the hand you are using to hold the plane over the hole in the end of the muffler as you crank over the prop. this will ensure that the motor is sucking fuel into the engine. I had lots of trouble starting cold engines until i was taught this trick.. do please look first to make sure that you are doing this in a completely safe manner.
stick a finger of the hand you are using to hold the plane over the hole in the end of the muffler as you crank over the prop. this will ensure that the motor is sucking fuel into the engine. I had lots of trouble starting cold engines until i was taught this trick.. do please look first to make sure that you are doing this in a completely safe manner.
#17

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From: Brookville,
PA
When you do get it started you will need an instructor to teach you to fly it, so if you find one now he will help you start it and make sure every thing is good to go before puting it in the air.
Most instructors do not charge for this!!!
tw
Most instructors do not charge for this!!!
tw
#19

Hi!
I'm the Swedish MVVS distributor. It seems to me that you do everything right! But don't know the secret to starting an engine. You can of course start any model engine by flipping the prop but a much easier way is to use an electric starter.
It's also important that you use an adequat power supply to light your glowplug. A small 1.2V C-cell battery isn't enought if you are new to engines. The glow plug should glow bright orange or white...not red!
A much better way is to use a 12V, 10-12Ah motorcycle battery to supply power to the glowplug and also power the electric starter and fuel pump. But you must use a glowdriver that reduces voltaget to the glowplug , 12V will otherwise destroy a gloplug. Automatic glowdrivers are readily available at every hobby shop.
It's also vital that you use the correct propeller. For a 7,5cc (.45) engine a 11x6 APC is a good propeller. Do not use a 10x6 prop as it is "to small" if you intend to use the engine in a high winged trainer.
Regards!
Jan K
Airracing products
I'm the Swedish MVVS distributor. It seems to me that you do everything right! But don't know the secret to starting an engine. You can of course start any model engine by flipping the prop but a much easier way is to use an electric starter.
It's also important that you use an adequat power supply to light your glowplug. A small 1.2V C-cell battery isn't enought if you are new to engines. The glow plug should glow bright orange or white...not red!
A much better way is to use a 12V, 10-12Ah motorcycle battery to supply power to the glowplug and also power the electric starter and fuel pump. But you must use a glowdriver that reduces voltaget to the glowplug , 12V will otherwise destroy a gloplug. Automatic glowdrivers are readily available at every hobby shop.
It's also vital that you use the correct propeller. For a 7,5cc (.45) engine a 11x6 APC is a good propeller. Do not use a 10x6 prop as it is "to small" if you intend to use the engine in a high winged trainer.
Regards!
Jan K
Airracing products




